Please explain step by step

The function h = -t2 + 95 models the path of a ball thrown by a boy where h represents height, in feet, and t represents the time, in seconds, that the ball is in the air. Assuming the boy lives at sea level where h = 0 ft, which is a likely place the boy could have been standing when he threw this ball?
A. his backyard
B. an underground cave
C. a ladder
D. a bridge

Question

Please explain step by step

The function  h = -t2 + 95 models the path of a ball thrown by a boy where h represents height, in feet, and t represents the time, in seconds, that the ball is in the air. Assuming the boy lives at sea level where h = 0 ft, which is a likely place the boy could have been standing when he threw this ball?
  A. his backyard 	
  B. an underground cave 	
  C. a ladder 	
  D. a bridge

anonymous · Answer

At t=0, what is the height of the ball?

anonymous · Answer

um... 0? e.o

anonymous · Answer

$$\large h(0)=-0^2 +95 = ?$$

anonymous · Answer

The equation:

h = -t^2 + 95

Describes the height of the ball as a function of time (t).

When t is zero, we have:

h = -(0)^2 + 95

h = 95 feet

That is, before he threw the ball, the height is at 95 feet.

That is about the height of a bridge.

Answer: d. a bridge

anonymous · Answer

Oooh that makes sense... thank you both.

anonymous · Answer

You're welcome!! Xo!